Why experienced drivers turn off the air conditioner a couple of minutes before turning off the engine

As long as a car exists, there are as many tricks associated with improving the operation of its components and assemblies. It will be about the air conditioner, and what should be done so that "everyone immediately feels good."

In the summer, car owners often complain about the musty smell in the cabin, which comes from the air ducts. The reason for this is the multiplication of bacteria in the air conditioning system. However, following one simple rule may solve this problem once and for all. Portal "AutoVzglyad" found an easy way to keep the air in the car fresh.

In the warm season, the air conditioning system works for wear and tear, not turning off in the heat for a second while the car engine is running. Yes, fuel consumption increases. But car owners are not averse to paying for comfort rather than sweating and breathing carbon monoxide with open windows.

But sooner or later the driver is forced to leave the cool cabin. Without thinking about how something is doing wrong, he simply turns off the ignition and goes about his business. Returning, the driver starts the car engine, and the air conditioning system again begins to generate life-giving coolness. It would seem, where is the catch? But gradually the cabin begins to smell strange. And in order to understand the reason for the appearance of an unpleasant odor, it is necessary to study the physics of the process occurring in the air conditioner at the time of shutdown.

The thing is that when the ignition is turned off while the climate control is running, condensation forms on the evaporator radiator of the unit due to the difference in internal and external temperatures. Liquid droplets can also appear in the air ducts. And bacteria multiply in a humid warm environment - a matter of time. And now the cool air entering the cabin is not so fresh, or even promises allergies, asthma and other lung diseases. How can this be prevented?

To remove excess moisture, before turning off the engine, you must first turn off the air conditioner. But do it so that the blower fan works. This will allow warm air to flow through the system, which will dry the evaporator and prevent condensation from forming in the duct system. To perform such actions, the driver will need only a couple of minutes, which will not only keep you fresh and cool in the heat, but also save you from the costly procedure of cleaning and disinfecting the air conditioner.